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CyberChef/src/js/lib/zlib_and_gzip.js

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/** @license
========================================================================
zlib.js 2012 - imaya [ https://github.com/imaya/zlib.js ] The MIT License
*/
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1][r]=b[r],h[c-1][r]=r;for(m=0;m<c;++m)l[m]=0;1===f[c-1]&&(--g[0],++l[c-1]);for(n=c-2;0<=n;--n){v=m=0;x=l[n+1];for(r=0;r<e[n];r++)v=k[n+1][x]+k[n+1][x+1],v>b[m]?(k[n][r]=v,h[n][r]=a,x+=2):(k[n][r]=b[m],h[n][r]=m,++m);l[n]=0;1===f[n]&&d(n)}return g}
function va(b){var a=new (B?Uint16Array:Array)(b.length),c=[],d=[],e=0,f,g,k,h;f=0;for(g=b.length;f<g;f++)c[b[f]]=(c[b[f]]|0)+1;f=1;for(g=16;f<=g;f++)d[f]=e,e+=c[f]|0,e<<=1;f=0;for(g=b.length;f<g;f++){e=d[b[f]];d[b[f]]+=1;k=a[f]=0;for(h=b[f];k<h;k++)a[f]=a[f]<<1|e&1,e>>>=1}return a};function Da(b,a){this.input=b;this.b=this.c=0;this.i={};a&&(a.flags&&(this.i=a.flags),"string"===typeof a.filename&&(this.filename=a.filename),"string"===typeof a.comment&&(this.A=a.comment),a.deflateOptions&&(this.l=a.deflateOptions));this.l||(this.l={})}
Da.prototype.g=function(){var b,a,c,d,e,f,g,k,h=new (B?Uint8Array:Array)(32768),l=0,s=this.input,p=this.c,m=this.filename,n=this.A;h[l++]=31;h[l++]=139;h[l++]=8;b=0;this.i.fname&&(b|=Ea);this.i.fcomment&&(b|=Fa);this.i.fhcrc&&(b|=Ga);h[l++]=b;a=(Date.now?Date.now():+new Date)/1E3|0;h[l++]=a&255;h[l++]=a>>>8&255;h[l++]=a>>>16&255;h[l++]=a>>>24&255;h[l++]=0;h[l++]=Ha;if(this.i.fname!==t){g=0;for(k=m.length;g<k;++g)f=m.charCodeAt(g),255<f&&(h[l++]=f>>>8&255),h[l++]=f&255;h[l++]=0}if(this.i.comment){g=
0;for(k=n.length;g<k;++g)f=n.charCodeAt(g),255<f&&(h[l++]=f>>>8&255),h[l++]=f&255;h[l++]=0}this.i.fhcrc&&(c=ja(h,0,l)&65535,h[l++]=c&255,h[l++]=c>>>8&255);this.l.outputBuffer=h;this.l.outputIndex=l;e=new na(s,this.l);h=e.g();l=e.b;B&&(l+8>h.buffer.byteLength?(this.a=new Uint8Array(l+8),this.a.set(new Uint8Array(h.buffer)),h=this.a):h=new Uint8Array(h.buffer));d=ja(s,t,t);h[l++]=d&255;h[l++]=d>>>8&255;h[l++]=d>>>16&255;h[l++]=d>>>24&255;k=s.length;h[l++]=k&255;h[l++]=k>>>8&255;h[l++]=k>>>16&255;h[l++]=
k>>>24&255;this.c=p;B&&l<h.length&&(this.a=h=h.subarray(0,l));return h};var Ha=255,Ga=2,Ea=8,Fa=16;A("Zlib.Gzip",Da);A("Zlib.Gzip.prototype.compress",Da.prototype.g);function T(b,a){this.p=[];this.q=32768;this.e=this.j=this.c=this.u=0;this.input=B?new Uint8Array(b):b;this.w=!1;this.r=Ia;this.M=!1;if(a||!(a={}))a.index&&(this.c=a.index),a.bufferSize&&(this.q=a.bufferSize),a.bufferType&&(this.r=a.bufferType),a.resize&&(this.M=a.resize);switch(this.r){case Ja:this.b=32768;this.a=new (B?Uint8Array:Array)(32768+this.q+258);break;case Ia:this.b=0;this.a=new (B?Uint8Array:Array)(this.q);this.f=this.U;this.B=this.R;this.s=this.T;break;default:q(Error("invalid inflate mode"))}}
var Ja=0,Ia=1,Ya={O:Ja,N:Ia};
T.prototype.h=function(){for(;!this.w;){var b=U(this,3);b&1&&(this.w=u);b>>>=1;switch(b){case 0:var a=this.input,c=this.c,d=this.a,e=this.b,f=a.length,g=t,k=t,h=d.length,l=t;this.e=this.j=0;c+1>=f&&q(Error("invalid uncompressed block header: LEN"));g=a[c++]|a[c++]<<8;c+1>=f&&q(Error("invalid uncompressed block header: NLEN"));k=a[c++]|a[c++]<<8;g===~k&&q(Error("invalid uncompressed block header: length verify"));c+g>a.length&&q(Error("input buffer is broken"));switch(this.r){case Ja:for(;e+g>d.length;){l=
h-e;g-=l;if(B)d.set(a.subarray(c,c+l),e),e+=l,c+=l;else for(;l--;)d[e++]=a[c++];this.b=e;d=this.f();e=this.b}break;case Ia:for(;e+g>d.length;)d=this.f({F:2});break;default:q(Error("invalid inflate mode"))}if(B)d.set(a.subarray(c,c+g),e),e+=g,c+=g;else for(;g--;)d[e++]=a[c++];this.c=c;this.b=e;this.a=d;break;case 1:this.s(Za,$a);break;case 2:ab(this);break;default:q(Error("unknown BTYPE: "+b))}}return this.B()};
var bb=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15],cb=B?new Uint16Array(bb):bb,db=[3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,258,258],eb=B?new Uint16Array(db):db,fb=[0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,0,0],gb=B?new Uint8Array(fb):fb,hb=[1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577],ib=B?new Uint16Array(hb):hb,jb=[0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,
10,11,11,12,12,13,13],kb=B?new Uint8Array(jb):jb,lb=new (B?Uint8Array:Array)(288),V,mb;V=0;for(mb=lb.length;V<mb;++V)lb[V]=143>=V?8:255>=V?9:279>=V?7:8;var Za=ma(lb),nb=new (B?Uint8Array:Array)(30),ob,qb;ob=0;for(qb=nb.length;ob<qb;++ob)nb[ob]=5;var $a=ma(nb);function U(b,a){for(var c=b.j,d=b.e,e=b.input,f=b.c,g=e.length,k;d<a;)f>=g&&q(Error("input buffer is broken")),c|=e[f++]<<d,d+=8;k=c&(1<<a)-1;b.j=c>>>a;b.e=d-a;b.c=f;return k}
function rb(b,a){for(var c=b.j,d=b.e,e=b.input,f=b.c,g=e.length,k=a[0],h=a[1],l,s;d<h&&!(f>=g);)c|=e[f++]<<d,d+=8;l=k[c&(1<<h)-1];s=l>>>16;b.j=c>>s;b.e=d-s;b.c=f;return l&65535}
function ab(b){function a(a,b,c){var d,e=this.J,f,g;for(g=0;g<a;)switch(d=rb(this,b),d){case 16:for(f=3+U(this,2);f--;)c[g++]=e;break;case 17:for(f=3+U(this,3);f--;)c[g++]=0;e=0;break;case 18:for(f=11+U(this,7);f--;)c[g++]=0;e=0;break;default:e=c[g++]=d}this.J=e;return c}var c=U(b,5)+257,d=U(b,5)+1,e=U(b,4)+4,f=new (B?Uint8Array:Array)(cb.length),g,k,h,l;for(l=0;l<e;++l)f[cb[l]]=U(b,3);if(!B){l=e;for(e=f.length;l<e;++l)f[cb[l]]=0}g=ma(f);k=new (B?Uint8Array:Array)(c);h=new (B?Uint8Array:Array)(d);
b.J=0;b.s(ma(a.call(b,c,g,k)),ma(a.call(b,d,g,h)))}T.prototype.s=function(b,a){var c=this.a,d=this.b;this.C=b;for(var e=c.length-258,f,g,k,h;256!==(f=rb(this,b));)if(256>f)d>=e&&(this.b=d,c=this.f(),d=this.b),c[d++]=f;else{g=f-257;h=eb[g];0<gb[g]&&(h+=U(this,gb[g]));f=rb(this,a);k=ib[f];0<kb[f]&&(k+=U(this,kb[f]));d>=e&&(this.b=d,c=this.f(),d=this.b);for(;h--;)c[d]=c[d++-k]}for(;8<=this.e;)this.e-=8,this.c--;this.b=d};
T.prototype.T=function(b,a){var c=this.a,d=this.b;this.C=b;for(var e=c.length,f,g,k,h;256!==(f=rb(this,b));)if(256>f)d>=e&&(c=this.f(),e=c.length),c[d++]=f;else{g=f-257;h=eb[g];0<gb[g]&&(h+=U(this,gb[g]));f=rb(this,a);k=ib[f];0<kb[f]&&(k+=U(this,kb[f]));d+h>e&&(c=this.f(),e=c.length);for(;h--;)c[d]=c[d++-k]}for(;8<=this.e;)this.e-=8,this.c--;this.b=d};
T.prototype.f=function(){var b=new (B?Uint8Array:Array)(this.b-32768),a=this.b-32768,c,d,e=this.a;if(B)b.set(e.subarray(32768,b.length));else{c=0;for(d=b.length;c<d;++c)b[c]=e[c+32768]}this.p.push(b);this.u+=b.length;if(B)e.set(e.subarray(a,a+32768));else for(c=0;32768>c;++c)e[c]=e[a+c];this.b=32768;return e};
T.prototype.U=function(b){var a,c=this.input.length/this.c+1|0,d,e,f,g=this.input,k=this.a;b&&("number"===typeof b.F&&(c=b.F),"number"===typeof b.P&&(c+=b.P));2>c?(d=(g.length-this.c)/this.C[2],f=258*(d/2)|0,e=f<k.length?k.length+f:k.length<<1):e=k.length*c;B?(a=new Uint8Array(e),a.set(k)):a=k;return this.a=a};
T.prototype.B=function(){var b=0,a=this.a,c=this.p,d,e=new (B?Uint8Array:Array)(this.u+(this.b-32768)),f,g,k,h;if(0===c.length)return B?this.a.subarray(32768,this.b):this.a.slice(32768,this.b);f=0;for(g=c.length;f<g;++f){d=c[f];k=0;for(h=d.length;k<h;++k)e[b++]=d[k]}f=32768;for(g=this.b;f<g;++f)e[b++]=a[f];this.p=[];return this.buffer=e};
T.prototype.R=function(){var b,a=this.b;B?this.M?(b=new Uint8Array(a),b.set(this.a.subarray(0,a))):b=this.a.subarray(0,a):(this.a.length>a&&(this.a.length=a),b=this.a);return this.buffer=b};function sb(b){this.input=b;this.c=0;this.t=[];this.D=!1}sb.prototype.X=function(){this.D||this.h();return this.t.slice()};
sb.prototype.h=function(){for(var b=this.input.length;this.c<b;){var a=new P,c=t,d=t,e=t,f=t,g=t,k=t,h=t,l=t,s=t,p=this.input,m=this.c;a.G=p[m++];a.H=p[m++];(31!==a.G||139!==a.H)&&q(Error("invalid file signature:"+a.G+","+a.H));a.z=p[m++];switch(a.z){case 8:break;default:q(Error("unknown compression method: "+a.z))}a.n=p[m++];l=p[m++]|p[m++]<<8|p[m++]<<16|p[m++]<<24;a.Z=new Date(1E3*l);a.fa=p[m++];a.ea=p[m++];0<(a.n&4)&&(a.aa=p[m++]|p[m++]<<8,m+=a.aa);if(0<(a.n&Ea)){h=[];for(k=0;0<(g=p[m++]);)h[k++]=
String.fromCharCode(g);a.name=h.join("")}if(0<(a.n&Fa)){h=[];for(k=0;0<(g=p[m++]);)h[k++]=String.fromCharCode(g);a.A=h.join("")}0<(a.n&Ga)&&(a.S=ja(p,0,m)&65535,a.S!==(p[m++]|p[m++]<<8)&&q(Error("invalid header crc16")));c=p[p.length-4]|p[p.length-3]<<8|p[p.length-2]<<16|p[p.length-1]<<24;p.length-m-4-4<512*c&&(f=c);d=new T(p,{index:m,bufferSize:f});a.data=e=d.h();m=d.c;a.ca=s=(p[m++]|p[m++]<<8|p[m++]<<16|p[m++]<<24)>>>0;ja(e,t,t)!==s&&q(Error("invalid CRC-32 checksum: 0x"+ja(e,t,t).toString(16)+
" / 0x"+s.toString(16)));a.da=c=(p[m++]|p[m++]<<8|p[m++]<<16|p[m++]<<24)>>>0;(e.length&4294967295)!==c&&q(Error("invalid input size: "+(e.length&4294967295)+" / "+c));this.t.push(a);this.c=m}this.D=u;var n=this.t,r,v,x=0,Q=0,y;r=0;for(v=n.length;r<v;++r)Q+=n[r].data.length;if(B){y=new Uint8Array(Q);for(r=0;r<v;++r)y.set(n[r].data,x),x+=n[r].data.length}else{y=[];for(r=0;r<v;++r)y[r]=n[r].data;y=Array.prototype.concat.apply([],y)}return y};A("Zlib.Gunzip",sb);A("Zlib.Gunzip.prototype.decompress",sb.prototype.h);A("Zlib.Gunzip.prototype.getMembers",sb.prototype.X);function tb(b){if("string"===typeof b){var a=b.split(""),c,d;c=0;for(d=a.length;c<d;c++)a[c]=(a[c].charCodeAt(0)&255)>>>0;b=a}for(var e=1,f=0,g=b.length,k,h=0;0<g;){k=1024<g?1024:g;g-=k;do e+=b[h++],f+=e;while(--k);e%=65521;f%=65521}return(f<<16|e)>>>0};function ub(b,a){var c,d;this.input=b;this.c=0;if(a||!(a={}))a.index&&(this.c=a.index),a.verify&&(this.$=a.verify);c=b[this.c++];d=b[this.c++];switch(c&15){case vb:this.method=vb;break;default:q(Error("unsupported compression method"))}0!==((c<<8)+d)%31&&q(Error("invalid fcheck flag:"+((c<<8)+d)%31));d&32&&q(Error("fdict flag is not supported"));this.L=new T(b,{index:this.c,bufferSize:a.bufferSize,bufferType:a.bufferType,resize:a.resize})}
ub.prototype.h=function(){var b=this.input,a,c;a=this.L.h();this.c=this.L.c;this.$&&(c=(b[this.c++]<<24|b[this.c++]<<16|b[this.c++]<<8|b[this.c++])>>>0,c!==tb(a)&&q(Error("invalid adler-32 checksum")));return a};var vb=8;function wb(b,a){this.input=b;this.a=new (B?Uint8Array:Array)(32768);this.k=W.o;var c={},d;if((a||!(a={}))&&"number"===typeof a.compressionType)this.k=a.compressionType;for(d in a)c[d]=a[d];c.outputBuffer=this.a;this.K=new na(this.input,c)}var W=ra;
wb.prototype.g=function(){var b,a,c,d,e,f,g,k=0;g=this.a;b=vb;switch(b){case vb:a=Math.LOG2E*Math.log(32768)-8;break;default:q(Error("invalid compression method"))}c=a<<4|b;g[k++]=c;switch(b){case vb:switch(this.k){case W.NONE:e=0;break;case W.v:e=1;break;case W.o:e=2;break;default:q(Error("unsupported compression type"))}break;default:q(Error("invalid compression method"))}d=e<<6|0;g[k++]=d|31-(256*c+d)%31;f=tb(this.input);this.K.b=k;g=this.K.g();k=g.length;B&&(g=new Uint8Array(g.buffer),g.length<=
k+4&&(this.a=new Uint8Array(g.length+4),this.a.set(g),g=this.a),g=g.subarray(0,k+4));g[k++]=f>>24&255;g[k++]=f>>16&255;g[k++]=f>>8&255;g[k++]=f&255;return g};function xb(b,a){var c,d,e,f;if(Object.keys)c=Object.keys(a);else for(d in c=[],e=0,a)c[e++]=d;e=0;for(f=c.length;e<f;++e)d=c[e],A(b+"."+d,a[d])};A("Zlib.Inflate",ub);A("Zlib.Inflate.prototype.decompress",ub.prototype.h);xb("Zlib.Inflate.BufferType",{ADAPTIVE:Ya.N,BLOCK:Ya.O});A("Zlib.Deflate",wb);A("Zlib.Deflate.compress",function(b,a){return(new wb(b,a)).g()});A("Zlib.Deflate.prototype.compress",wb.prototype.g);xb("Zlib.Deflate.CompressionType",{NONE:W.NONE,FIXED:W.v,DYNAMIC:W.o});}).call(this);
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